My conversation with COHERENT

Apart from trying to clean the output window there’s nothing else we can do to fix this issue in the field. It’s most likely a problem inside the resonator. The system would need to be sent in to verify this. If you would like to have the system evaluated I would need a $1000.00 evaluation PO. After we evaluate I could let you know the cost to repair.

After checking the serial number history I don’t show this system being sold to you. How did you acquire it? This is an 8 year old laser. Are you working with the original owner of the laser? I need to know this before we can offer support.

We have a CO2 laser from coherent and any help will be greatly appreciated. We have an optical tweezer powered by Model: Compass 1064-4000M; Serial No. H020417751; Output 4W diode pumped CW IR laser. We need some technical help.

Problem: The laser supposes to be in fundamental TEM00 mode at max power of 4W. But it seems like it’s not. Power spectrum at trap (OT) above 3 W is not linear with power. We did beam profiling; up-to 3 W the mode is single TEM00 but above 3 W its look like we have a combination of modes. It is highly required by the OT setup, that laser stays in fundamental mode (optimum focusing) at 4W.

Question: Do you offer any technical support-line (if yes can you please help us in solving above problem), so we can fix this problem ourselves? Do you also offer in-person on-site support for our region (if yes please also guide us with the process)?

We have a dead-line to follow, so a quick response will be highly appreciated. We thank you in advance for your time and effort.